The death of the settlor, at any time after a chargeable transfer to which section 54A above applies, shall not increase the tax chargeable on the value transferred by the transfer unless, at the time of the transfer, the tax determined in accordance with subsection (5) of that section is greater than the tax that would be chargeable apart from that section.
The death of the person who was beneficially entitled to the relevant interest, at any time after a chargeable transfer to which section 54A above applies, shall not increase the tax chargeable on the value transferred by the transfer unless, at the time of the transfer, the tax that would be chargeable apart from that section is greater than the tax determined in accordance with subsection (5) of that section.
Where the tax chargeable on the value transferred by a chargeable transfer to which section 54A above applies falls to be determined in accordance with subsection (5) of that section, the amount referred to in paragraph (a) of that subsection shall be treated for the purposes of this Act as tax attributable to the value of the property in which the relevant interest subsisted.
Subsection (5) below shall apply if—
and in subsections (5) and (6) below the other transfer is referred to as the "previous transfer".
Where this subsection applies, the appropriate amount in relation to the previous transfer (or, if there has been more than one previous transfer, the aggregate of the appropriate amounts in relation to each) shall, for the purposes of calculating the tax chargeable on the current transfer, be taken to be the value transferred by a chargeable transfer made by the settlor immediately before the potentially exempt transfer was made.
In subsection (5) above "the appropriate amount", in relation to a previous transfer, means so much of the value transferred by the previous transfer as was attributable to the value of property which was the special rate property in relation to that transfer.
In this section—
"the relevant interest" has the meaning given by subsection (1) of section 54A above; and
"the special rate property" has the meaning given by subsection (3) of that section.